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From:   Arnd Bergmann <arnd@arndb.de>
Date:   Mon, 1 Jun 2020 23:12:17 +0200
Message-ID: <CAK8P3a3=XjLvQYz2xB_1=XHFb34Q6zhAJbpJEDRUPX_r=kEBRg@mail.gmail.com>
Subject: Re: [GIT PULL] sh: remove sh5 support
To:     Rich Felker <dalias@libc.org>
Cc:     John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
        Christoph Hellwig <hch@infradead.org>,
        Linux-sh list <linux-sh@vger.kernel.org>,
        Yoshinori Sato <ysato@users.sourceforge.jp>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Rob Landley <rob@landley.net>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Linus Torvalds <torvalds@linux-foundation.org>
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On Mon, Jun 1, 2020 at 8:13 PM Rich Felker <dalias@libc.org> wrote:
> On Sat, May 30, 2020 at 10:08:09AM +0200, John Paul Adrian Glaubitz wrote:
> > On 5/29/20 7:53 PM, Rich Felker wrote:
> > > [PATCH next] sh: remove call to memset after dma_alloc_coherent
> > > https://marc.info/?l=linux-sh&m=157793031102356&w=2
>
> Can anyone confirm that this is correct/safe?

Yes, this is safe, I checked both the API definition and the sh
implementation in arch_dma_alloc(), which passes __GFP_ZERO.

       Arnd